*{
	margin: 0;
	padding: 0;
}
#header_a{
	width: 100%;
	height: 40px;
	line-height: 40px;
	display: flex;
	background: #e3e3e3;
}
#header_a p{
	margin:0 50px ;
}
.txt_a{
	width: 300px;
	height: 30px;
	margin: 3px 0;
}
.txt_b{
	width: 60px;
	height: 30px;
	margin: 4px 10px;
}
#header_b{
	width: 680px;
	height: 300px;
	margin: 0 auto;
	padding-left: 120px;
}
#header_b p{
	width: 1000px;
	height: 40px;
	line-height: 40px;
}
.b_a{
	width: 600px;
	height: 30px;
}
#bc_a{
	width: 100px;
	height: 35px;
	margin-top: 10px;
}
#tpy{
	width: 1000px;
	height: 600px;
	margin: 50px auto;
}
#box_b{
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	background: rgba(0, 0, 0, 0.5);
	display: none;
}
#box_ab{
	width: 400px;
	height: 500px;
	border: 1px solid #ccc;
	background: rgba(255, 255, 255, 0.7);
	margin: 100px auto;
}
.p_a{
	width: 360px;
	height: 50px;
	line-height: 50px;
	font-size: 22px;
	padding-left: 40px;
}
#header_c{
	width: 400px;
	height: 400px;
	margin-top: 20px;
}
#header_c p{
	width: 350px;
	height: 50px;
	line-height: 50px;
	padding-left: 45px;
}
.b_aa{
	width: 300px;
	height: 40px;
}
.bcc{
	width: 400px;
	height: 50px;
	margin-top: 30px;	
}
#bc_aa{
	float: right;
	width: 50px;
	height: 40px;
	margin-right: 20px;
}
#bc_bb{
	float: right;
	width: 100px;
	height: 40px;
	margin-right: 20px;
	background: red;
}
.table tbody tr td{
	text-align: center;	
	height: 30px;
	line-height: 30px;
	border: 1px solid #ccc;
}
.table thead tr th{
	height: 40px;
	line-height: 40px;
	border: 1px solid #ccc;
}